[A] add --root-dir-of-data option

Author: c-rainstorm

src/main/java/me/rainstorm/innodb/parser/options/CommandLineArgEnum.java

@@ -12,7 +12,8 @@ public enum CommandLineArgEnum {
     Help('h', "help", false, "打印帮助文档"),
     Version('v', "version", false, "打印版本号"),
     Verbose('V', "verbose", false, "打印更详细的信息"),
-    SystemTableSpace('s', "system-tablespace-file", false, true, "系统表空间文件，绝对路径", "/var/lib/mysql/ibdata1"),
+    DataDir('r', "root-dir-of-data", false, true, "数据目录，所有表空间默认在该目录下", "/var/lib/mysql"),
+    SystemTableSpace('s', "system-tablespace-file", false, true, "系统表空间文件路径，-r 的相对路径", "ibdata1"),
     Database('d', "database", true, "需要分析的数据库名称"),
     TableName('t', "table", true, "需要分析的表名"),
     Page('p', "page", true, "需要分析的表空间页号，页号从 0 开始");
@@ -45,6 +46,7 @@ public enum CommandLineArgEnum {
         this(opt, longOpt, required, hasArg, desc, null);
     }
 
+
     /**
      * 含长选项的命令行参数
      *
@@ -80,7 +82,6 @@ public String getLongOpt() {
         }
     }
 
-
     public String getLongOptWithDefaultValue() {
         if (option.hasArg()) {
             return getLongOpt() + "=" + getDefaultValue();

src/main/java/me/rainstorm/innodb/parser/options/CommandLineArgsHelper.java

@@ -12,7 +12,7 @@
  */
 @Slf4j
 public class CommandLineArgsHelper {
-    private static final HelpFormatter formatter = new HelpFormatter();
+    private static final HelpFormatter FORMATTER = new HelpFormatter();
 
     private final CommandLine commandLineParsed;
 
@@ -21,9 +21,9 @@ public CommandLineArgsHelper(String[] args) throws ParseException {
     }
 
     public static void printHelp() {
-        formatter.printHelp("java -jar /path/to/your/innodb-parser.jar " + requiredArg() +
+        FORMATTER.printHelp("java -jar /path/to/your/innodb-parser.jar " + requiredArg() +
                         " [OPTION]...\n" +
-                        "根据选项解析 Innodb 数据文件",
+                        "根据选项解析 Innodb 数据文件，目前支持系统表空间页和独立表空间部分页的分析，具体说明请查看 README",
                 "====================================",
                 CommandLineArgEnum.getOptions(),
                 "====================================\n如有问题，可以联系 pom.xml 中的开发者");